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READ THIS: Before creating a pull request, please consider the following first.
* The most important thing you can do is write tests. Code without tests
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* Read the Contributing guide linked above first.
* If you are adding a new linter, remember to update the README.md file and
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* If you add or modify a function for converting error lines into loclist items
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* Generally try and cover anything with Vader tests, although some things just
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* Have fun!
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